diff options
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2010-12-08 15:29:02 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-12-08 20:16:31 +0100 |
| commit | c277443cfc29b1623b4923219ff0bdb48b91b589 (patch) | |
| tree | 0655516f81164a42dfb06e416b54c50cac33f433 /kernel/capability.c | |
| parent | c079c791c5a0627fc7b752d31d72e274e0596ba8 (diff) | |
perf: Stop all counters on reboot
Use the reboot notifier to detach all running counters on reboot, this
solves a problem with kexec where the new kernel doesn't expect
running counters (rightly so).
It will however decrease the coverage of the NMI watchdog. Making a
kexec specific reboot notifier callback would be best, however that
would require touching all notifier callback handlers as they are not
properly structured to deal with new state.
As a compromise, place the perf reboot notifier at the very last
position in the list.
Reported-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Jason Wessel <jason.wessel@windriver.com>
Cc: Don Zickus <dzickus@redhat.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/capability.c')
0 files changed, 0 insertions, 0 deletions